From the moment Zymere had set foot into Alexei, Angelo knew there would come a day that he would regret hosting him. He knew the moonchild had a long list of enemies that wanted him dead and who wouldn't feel bad about attacking Alexei.
He was aware that the moonchild was a risk, but he also knew he and Hera would be able to take on the enemies. He had been expecting this, but no amount of preparation would make him ready for the creatures of the night.
When he had seen the ghoul, he knew it was time to implement what he had been planning for the seven months. He had worked so hard with his team to make Alexei home and the only way he would let his efforts go to waste, was if he was dead.
And the mad king wasn't ever going to die, a fact that his immortality kept throwing at his face. Maybe it was time they used their curse to make things better for Alexei, because if he wasn't careful, they would all be ruined.